You've Got Mail.........DM42L

[Werner]

Ah, of course.. ;-)
But then, so does the 34S?
Take this example (in DEG mode)
SIN(180-a) = COS(270+a)
Take a=1e-4
WolframAlpha produces (for both, of course)
1.74532 92519 93443 48076 79896 05432 78633..e-6

Free42 produces (for both)
1.74532 92519 93443 48076 79896 05432 787e-6

the 34S produces
1.74532 92519 93443 48076 79896 05432 791e-6 for SIN
1.74532 92519 93443 48076 79896 05432 778e-6 for COS

BTW Free42 will honour the equality, whatever the value of a you might throw at it.

Cheers, Werner